Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "The most significant set of changes is the per netns RTNL. The new
  behavior is disabled by default, regression risk should be contained.

  Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
  default value from PTP_1588_CLOCK_KVM, as the first is intended to be
  a more reliable replacement for the latter.

  Core:

   - Started a very large, in-progress, effort to make the RTNL lock
     scope per network-namespace, thus reducing the lock contention
     significantly in the containerized use-case, comprising:
       - RCU-ified some relevant slices of the FIB control path
       - introduce basic per netns locking helpers
       - namespacified the IPv4 address hash table
       - remove rtnl_register{,_module}() in favour of
         rtnl_register_many()
       - refactor rtnl_{new,del,set}link() moving as much validation as
         possible out of RTNL lock
       - convert all phonet doit() and dumpit() handlers to RCU
       - convert IPv4 addresses manipulation to per-netns RTNL
       - convert virtual interface creation to per-netns RTNL
     the per-netns lock infrastructure is guarded by the
     CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.

   - Introduce NAPI suspension, to efficiently switching between busy
     polling (NAPI processing suspended) and normal processing.

   - Migrate the IPv4 routing input, output and control path from direct
     ToS usage to DSCP macros. This is a work in progress to make ECN
     handling consistent and reliable.

   - Add drop reasons support to the IPv4 rotue input path, allowing
     better introspection in case of packets drop.

   - Make FIB seqnum lockless, dropping RTNL protection for read access.

   - Make inet{,v6} addresses hashing less predicable.

   - Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
     and timestamps

  Things we sprinkled into general kernel code:

   - Add small file operations for debugfs, to reduce the struct ops
     size.

   - Refactoring and optimization for the implementation of page_frag
     API, This is a preparatory work to consolidate the page_frag
     implementation.

  Netfilter:

   - Optimize set element transactions to reduce memory consumption

   - Extended netlink error reporting for attribute parser failure.

   - Make legacy xtables configs user selectable, giving users the
     option to configure iptables without enabling any other config.

   - Address a lot of false-positive RCU issues, pointed by recent CI
     improvements.

  BPF:

   - Put xsk sockets on a struct diet and add various cleanups. Overall,
     this helps to bump performance by 12% for some workloads.

   - Extend BPF selftests to increase coverage of XDP features in
     combination with BPF cpumap.

   - Optimize and homogenize bpf_csum_diff helper for all archs and also
     add a batch of new BPF selftests for it.

   - Extend netkit with an option to delegate skb->{mark,priority}
     scrubbing to its BPF program.

   - Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
     programs.

  Protocols:

   - Introduces 4-tuple hash for connected udp sockets, speeding-up
     significantly connected sockets lookup.

   - Add a fastpath for some TCP timers that usually expires after
     close, the socket lock contention.

   - Add inbound and outbound xfrm state caches to speed up state
     lookups.

   - Avoid sending MPTCP advertisements on stale subflows, reducing
     risks on loosing them.

   - Make neighbours table flushing more scalable, maintaining per
     device neigh lists.

  Driver API:

   - Introduce a unified interface to configure transmission H/W
     shaping, and expose it to user-space via generic-netlink.

   - Add support for per-NAPI config via netlink. This makes napi
     configuration persistent across queues removal and re-creation.
     Requires driver updates, currently supported drivers are:
     nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.

   - Add ethtool support for writing SFP / PHY firmware blocks.

   - Track RSS context allocation from ethtool core.

   - Implement support for mirroring to DSA CPU port, via TC mirror
     offload.

   - Consolidate FDB updates notification, to avoid duplicates on
     device-specific entries.

   - Expose DPLL clock quality level to the user-space.

   - Support master-slave PHY config via device tree.

  Tests and tooling:

   - forwarding: introduce deferred commands, to simplify the cleanup
     phase

  Drivers:

   - Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
     Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
     IRQs and queues to NAPI IDs, allowing busy polling and better
     introspection.

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - mlx5:
           - a large refactor to implement support for cross E-Switch
             scheduling
           - refactor H/W conter management to let it scale better
           - H/W GRO cleanups
      - Intel (100G, ice)::
         - add support for ethtool reset
         - implement support for per TX queue H/W shaping
      - AMD/Solarflare:
         - implement per device queue stats support
      - Broadcom (bnxt):
         - improve wildcard l4proto on IPv4/IPv6 ntuple rules
      - Marvell Octeon:
         - Add representor support for each Resource Virtualization Unit
           (RVU) device.
      - Hisilicon:
         - add support for the BMC Gigabit Ethernet
      - IBM (EMAC):
         - driver cleanup and modernization
      - Cisco (VIC):
         - raise the queues number limit to 256

   - Ethernet virtual:
      - Google vNIC:
         - implement page pool support
      - macsec:
         - inherit lower device's features and TSO limits when
           offloading
      - virtio_net:
         - enable premapped mode by default
         - support for XDP socket(AF_XDP) zerocopy TX
      - wireguard:
         - set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
           packets.

   - Ethernet NICs embedded and virtual:
      - Broadcom ASP:
         - enable software timestamping
      - Freescale:
         - add enetc4 PF driver
      - MediaTek: Airoha SoC:
         - implement BQL support
      - RealTek r8169:
         - enable TSO by default on r8168/r8125
         - implement extended ethtool stats
      - Renesas AVB:
         - enable TX checksum offload
      - Synopsys (stmmac):
         - support header splitting for vlan tagged packets
         - move common code for DWMAC4 and DWXGMAC into a separate FPE
           module.
         - add dwmac driver support for T-HEAD TH1520 SoC
      - Synopsys (xpcs):
         - driver refactor and cleanup
      - TI:
         - icssg_prueth: add VLAN offload support
      - Xilinx emaclite:
         - add clock support

   - Ethernet switches:
      - Microchip:
         - implement support for the lan969x Ethernet switch family
         - add LAN9646 switch support to KSZ DSA driver

   - Ethernet PHYs:
      - Marvel: 88q2x: enable auto negotiation
      - Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2

   - PTP:
      - Add support for the Amazon virtual clock device
      - Add PtP driver for s390 clocks

   - WiFi:
      - mac80211
         - EHT 1024 aggregation size for transmissions
         - new operation to indicate that a new interface is to be added
         - support radio separation of multi-band devices
         - move wireless extension spy implementation to libiw
      - Broadcom:
         - brcmfmac: optional LPO clock support
      - Microchip:
         - add support for Atmel WILC3000
      - Qualcomm (ath12k):
         - firmware coredump collection support
         - add debugfs support for a multitude of statistics
      - Qualcomm (ath5k):
         -  Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
      - Realtek:
         - rtw88: 8821au and 8812au USB adapters support
         - rtw89: add thermal protection
         - rtw89: fine tune BT-coexsitence to improve user experience
         - rtw89: firmware secure boot for WiFi 6 chip

   - Bluetooth
      - add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
        0x13d3:0x3623
      - add Realtek RTL8852BE support for id Foxconn 0xe123
      - add MediaTek MT7920 support for wireless module ids
      - btintel_pcie: add handshake between driver and firmware
      - btintel_pcie: add recovery mechanism
      - btnxpuart: add GPIO support to power save feature"

* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits)
  mm: page_frag: fix a compile error when kernel is not compiled
  Documentation: tipc: fix formatting issue in tipc.rst
  selftests: nic_performance: Add selftest for performance of NIC driver
  selftests: nic_link_layer: Add selftest case for speed and duplex states
  selftests: nic_link_layer: Add link layer selftest for NIC driver
  bnxt_en: Add FW trace coredump segments to the coredump
  bnxt_en: Add a new ethtool -W dump flag
  bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr()
  bnxt_en: Add functions to copy host context memory
  bnxt_en: Do not free FW log context memory
  bnxt_en: Manage the FW trace context memory
  bnxt_en: Allocate backing store memory for FW trace logs
  bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem()
  bnxt_en: Refactor bnxt_free_ctx_mem()
  bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type
  bnxt_en: Update firmware interface spec to 1.10.3.85
  selftests/bpf: Add some tests with sockmap SK_PASS
  bpf: fix recursive lock when verdict program return SK_PASS
  wireguard: device: support big tcp GSO
  wireguard: selftests: load nf_conntrack if not present
  ...

1 files changed, 222 insertions, 0 deletions

diff --git a/tools/testing/selftests/drivers/net/hw/lib/py/linkconfig.py b/tools/testing/selftests/drivers/net/hw/lib/py/linkconfig.py
new file mode 100644
index 000000000000..db84000fc75b
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/hw/lib/py/linkconfig.py
@@ -0,0 +1,222 @@
+# SPDX-License-Identifier: GPL-2.0
+
+from lib.py import cmd, ethtool, ip
+from lib.py import ksft_pr, ksft_eq, KsftSkipEx
+from typing import Optional
+import re
+import time
+import json
+
+#The LinkConfig class is implemented to handle the link layer configurations.
+#Required minimum ethtool version is 6.10
+
+class LinkConfig:
+    """Class for handling the link layer configurations"""
+    def __init__(self, cfg: object) -> None:
+        self.cfg = cfg
+        self.partner_netif = self.get_partner_netif_name()
+
+        """Get the initial link configuration of local interface"""
+        self.common_link_modes = self.get_common_link_modes()
+
+    def get_partner_netif_name(self) -> Optional[str]:
+        partner_netif = None
+        try:
+            if not self.verify_link_up():
+                return None
+            """Get partner interface name"""
+            partner_json_output = ip("addr show", json=True, host=self.cfg.remote)
+            for interface in partner_json_output:
+                for addr in interface.get('addr_info', []):
+                    if addr.get('local') == self.cfg.remote_addr:
+                        partner_netif = interface['ifname']
+                        ksft_pr(f"Partner Interface name: {partner_netif}")
+            if partner_netif is None:
+                ksft_pr("Unable to get the partner interface name")
+        except Exception as e:
+            print(f"Unexpected error occurred while getting partner interface name: {e}")
+        self.partner_netif = partner_netif
+        return partner_netif
+
+    def verify_link_up(self) -> bool:
+        """Verify whether the local interface link is up"""
+        with open(f"/sys/class/net/{self.cfg.ifname}/operstate", "r") as fp:
+            link_state = fp.read().strip()
+
+        if link_state == "down":
+            ksft_pr(f"Link state of interface {self.cfg.ifname} is DOWN")
+            return False
+        else:
+            return True
+
+    def reset_interface(self, local: bool = True, remote: bool = True) -> bool:
+        ksft_pr("Resetting interfaces in local and remote")
+        if remote:
+            if self.verify_link_up():
+                if self.partner_netif is not None:
+                    ifname = self.partner_netif
+                    link_up_cmd = f"ip link set up {ifname}"
+                    link_down_cmd = f"ip link set down {ifname}"
+                    reset_cmd = f"{link_down_cmd} && sleep 5 && {link_up_cmd}"
+                    try:
+                        cmd(reset_cmd, host=self.cfg.remote)
+                    except Exception as e:
+                        ksft_pr(f"Unexpected error occurred while resetting remote: {e}")
+                else:
+                    ksft_pr("Partner interface not available")
+        if local:
+            ifname = self.cfg.ifname
+            link_up_cmd = f"ip link set up {ifname}"
+            link_down_cmd = f"ip link set down {ifname}"
+            reset_cmd = f"{link_down_cmd} && sleep 5 && {link_up_cmd}"
+            try:
+                cmd(reset_cmd)
+            except Exception as e:
+                ksft_pr(f"Unexpected error occurred while resetting local: {e}")
+        time.sleep(10)
+        if self.verify_link_up() and self.get_ethtool_field("link-detected"):
+            ksft_pr("Local and remote interfaces reset to original state")
+            return True
+        else:
+            ksft_pr("Error occurred after resetting interfaces. Link is DOWN.")
+            return False
+
+    def set_speed_and_duplex(self, speed: str, duplex: str, autoneg: bool = True) -> bool:
+        """Set the speed and duplex state for the interface"""
+        autoneg_state = "on" if autoneg is True else "off"
+        process = None
+        try:
+            process = ethtool(f"--change {self.cfg.ifname} speed {speed} duplex {duplex} autoneg {autoneg_state}")
+        except Exception as e:
+            ksft_pr(f"Unexpected error occurred while setting speed/duplex: {e}")
+        if process is None or process.ret != 0:
+            return False
+        else:
+            ksft_pr(f"Speed: {speed} Mbps, Duplex: {duplex} set for Interface: {self.cfg.ifname}")
+            return True
+
+    def verify_speed_and_duplex(self, expected_speed: str, expected_duplex: str) -> bool:
+        if not self.verify_link_up():
+            return False
+        """Verifying the speed and duplex state for the interface"""
+        with open(f"/sys/class/net/{self.cfg.ifname}/speed", "r") as fp:
+            actual_speed = fp.read().strip()
+        with open(f"/sys/class/net/{self.cfg.ifname}/duplex", "r") as fp:
+            actual_duplex = fp.read().strip()
+
+        ksft_eq(actual_speed, expected_speed)
+        ksft_eq(actual_duplex, expected_duplex)
+        return True
+
+    def set_autonegotiation_state(self, state: str, remote: bool = False) -> bool:
+        common_link_modes = self.common_link_modes
+        speeds, duplex_modes = self.get_speed_duplex_values(self.common_link_modes)
+        speed = speeds[0]
+        duplex = duplex_modes[0]
+        if not speed or not duplex:
+            ksft_pr("No speed or duplex modes found")
+            return False
+
+        speed_duplex_cmd = f"speed {speed} duplex {duplex}" if state == "off" else ""
+        if remote:
+            if not self.verify_link_up():
+                return False
+            """Set the autonegotiation state for the partner"""
+            command = f"-s {self.partner_netif} {speed_duplex_cmd} autoneg {state}"
+            partner_autoneg_change = None
+            """Set autonegotiation state for interface in remote pc"""
+            try:
+                partner_autoneg_change = ethtool(command, host=self.cfg.remote)
+            except Exception as e:
+                ksft_pr(f"Unexpected error occurred while changing auto-neg in remote: {e}")
+            if partner_autoneg_change is None or partner_autoneg_change.ret != 0:
+                ksft_pr(f"Not able to set autoneg parameter for interface {self.partner_netif}.")
+                return False
+            ksft_pr(f"Autoneg set as {state} for {self.partner_netif}")
+        else:
+            """Set the autonegotiation state for the interface"""
+            try:
+                process = ethtool(f"-s {self.cfg.ifname} {speed_duplex_cmd} autoneg {state}")
+                if process.ret != 0:
+                    ksft_pr(f"Not able to set autoneg parameter for interface {self.cfg.ifname}")
+                    return False
+            except Exception as e:
+                ksft_pr(f"Unexpected error occurred while changing auto-neg in local: {e}")
+                return False
+            ksft_pr(f"Autoneg set as {state} for {self.cfg.ifname}")
+        return True
+
+    def check_autoneg_supported(self, remote: bool = False) -> bool:
+        if not remote:
+            local_autoneg = self.get_ethtool_field("supports-auto-negotiation")
+            if local_autoneg is None:
+                ksft_pr(f"Unable to fetch auto-negotiation status for interface {self.cfg.ifname}")
+            """Return autoneg status of the local interface"""
+            return local_autoneg
+        else:
+            if not self.verify_link_up():
+                raise KsftSkipEx("Link is DOWN")
+            """Check remote auto-negotiation support status"""
+            partner_autoneg = False
+            if self.partner_netif is not None:
+                partner_autoneg = self.get_ethtool_field("supports-auto-negotiation", remote=True)
+                if partner_autoneg is None:
+                    ksft_pr(f"Unable to fetch auto-negotiation status for interface {self.partner_netif}")
+            return partner_autoneg
+
+    def get_common_link_modes(self) -> set[str]:
+        common_link_modes = []
+        """Populate common link modes"""
+        link_modes = self.get_ethtool_field("supported-link-modes")
+        partner_link_modes = self.get_ethtool_field("link-partner-advertised-link-modes")
+        if link_modes is None:
+            raise KsftSkipEx(f"Link modes not available for {self.cfg.ifname}")
+        if partner_link_modes is None:
+            raise KsftSkipEx(f"Partner link modes not available for {self.cfg.ifname}")
+        common_link_modes = set(link_modes) and set(partner_link_modes)
+        return common_link_modes
+
+    def get_speed_duplex_values(self, link_modes: list[str]) -> tuple[list[str], list[str]]:
+        speed = []
+        duplex = []
+        """Check the link modes"""
+        for data in link_modes:
+            parts = data.split('/')
+            speed_value = re.match(r'\d+', parts[0])
+            if speed_value:
+                speed.append(speed_value.group())
+            else:
+                ksft_pr(f"No speed value found for interface {self.ifname}")
+                return None, None
+            duplex.append(parts[1].lower())
+        return speed, duplex
+
+    def get_ethtool_field(self, field: str, remote: bool = False) -> Optional[str]:
+        process = None
+        if not remote:
+            """Get the ethtool field value for the local interface"""
+            try:
+                process = ethtool(self.cfg.ifname, json=True)
+            except Exception as e:
+                ksft_pr("Required minimum ethtool version is 6.10")
+                ksft_pr(f"Unexpected error occurred while getting ethtool field in local: {e}")
+                return None
+        else:
+            if not self.verify_link_up():
+                return None
+            """Get the ethtool field value for the remote interface"""
+            self.cfg.require_cmd("ethtool", remote=True)
+            if self.partner_netif is None:
+                ksft_pr(f"Partner interface name is unavailable.")
+                return None
+            try:
+                process = ethtool(self.partner_netif, json=True, host=self.cfg.remote)
+            except Exception as e:
+                ksft_pr("Required minimum ethtool version is 6.10")
+                ksft_pr(f"Unexpected error occurred while getting ethtool field in remote: {e}")
+                return None
+        json_data = process[0]
+        """Check if the field exist in the json data"""
+        if field not in json_data:
+            raise KsftSkipEx(f"Field {field} does not exist in the output of interface {json_data["ifname"]}")
+        return json_data[field]